Loose-leaf binder



J. ENGELLAND.

LOOSE LEAF BINDER.

APPLICATION man IAN. 21. I921.

1,397,577. Patented Nov. 22, 1921..

Jihad iizyelimaf I I UNITED STATES- PATENT OFFICE.

TULIUS ENGELLAND, OF ST. LOUIS, MISSdURI.

LOOSE-LEAF BINDER.

Application filed January 27, 1921. Serial No. 440,390. I

To all whom it may concern:

Be it known that I, JULIUS -ENGELLAND citlzen of the United States,residing at and useful Improvement in Loose-Leaf Binders, of which thefollowing is a full, clear, and exact description, such as will-enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanyin drawings, forming part' ofthis "spec'i cation, in which- Figure 1 is a detail view of'my improvedloose leaf binder.

.Fig. 2 is a detail view of the front or back cover stiffener.

Fig. 3 is a detail view of the plate used in connection with my improvedbinder.

Fig. 4 is a modified form of binder clip.

This invention relates to a new and useful improvement in loose leafbinders and ing or openings in the back or cover portion of the book andthen permitted to spread apart whereupon by the formation of the .legsof the U-shaped clip, it will interlock with the cover againstaccidental displacement.

While I have shown forms of my improved clip as being U-shaped, it isobvious that other shapes may be specially adapted for special purposesand could be made without the least change in the nature and principleof my invention.

In the drawings, 1 indicates the back cover of a book, and 2 the frontcover thereof, said covers being connected by back member 3 hingedthereto. As shown in Fig. 2, the stiffener for one of the covers,indicated at 4, is slotted as at 5, to provide aspace 4 for the toes orextreme ends of the clips.

The inner edge of cover 4 i embraced by a' U-shaped'.str1p of metal 6provided with key-hole or T-shaped openings 7 oppositely Louis,Missouri, have invented a certain newdispos'ed to each other in pairs.This strip 6. when slipped over the edge of the cover stiffener 4 willcover the slots 5 and of course, the openings 7 are left exposed, thoughany finishing covering material may be employed on the vcoverafter thestrip 6 is placed 1n position. 8 indicates a U-shaped clip made of flatspring metal and near the extremities of this clip are notches 9 on oneor both sides thereof. 10 indicates a pile of leaves in dotted lines inFig. 1, each leaf of whlch plle, as usual, is perforated as at 11. If iti desired to bind these leaves between the covers, the leg of the cli ispassed through the alined perforations o the leaves and then the legs ofthe clip are pressed together and inserted in the enlarged portion ofthe key-hole openings and permitted to spring apart whereby they becomelooked to the cover and hold the leaves in place. I prefer to mount thelegs on the back cover,

but, of course, these legs could be arranged on the hinged back cover,if desired.

In Fig. 4 the clip 22 is shown as being made of a heavy wire havingslots 23 in its sides which are designed to cooperate with a keeperplate having key hole openings 24.

piece 3, or on the front binder is obvious from the foregoing. To

remove the clips from the binder, it 1s only necessary to pring theirlegs together and lift them out of their openings in the keeper plates.In this way, the entire pile of leaves may be taken out and if it isdesired to place new leaves in position, the clips may be removed so asto properly arrange the new leaves in place, after which the clips arethreaded through the perforations of the pile of leaves and by pressingtheir legs together, they can be placed in position in the opening inthe keeper plate and by their natural resiliency, expand into engagementwith said keeper plate, locking themselves against vertical movement ineitherdirec-- portion having a keeper plate provided with key holeopenings, a detachable U-shaped Patented Nov. 22, 1921.

The operation of my improved loose leaf spring clip, each leg of whichis notched on thereof in said notches, thereby providing opposite edgesnearit lower end and which separate and detachable locking engagement olegs are adapted to be moved toward each for each leg. 10 other forintroduction into the larger por- In testimony whereof I hereunto afiixmy tion of .said keeper plate openings said signature this 22nd'day ofJanuary, 1921.

legs springing into the smaller portion of said key-hole openings toreceive the edges JULIUS ENGELLAND.

